While suspended, lay-in ceilings have long been the norm in commercial design, the open-plenum ceiling has become trendy and economical, particularly in office and retail environments. However, calculating the tradeoffs between cost and performance can be tricky.
Very little data exists comparing suspended ceilings with open ceilings on the basis of cost and performance. The most recent study came from the Ceilings & Interior Systems Construction Association (www.cisca.org) five years ago. In the study, office and retail spaces were modeled in Chicago, Charlotte, Oklahoma City, Orlando, and Phoenix to reflect the differences in energy costs, climate, and installation costs. Initial construction costs were determined using RSMeans data; annual operating costs for HVAC, lighting, and maintenance were calculated according to Building Owners and Managers Association data.
The study found initial construction costs for suspended ceilings to be 15-22% higher in offices, and 4-11% higher in retail spaces. However, total energy savings for lay-in ceilings vs. open plenums were 9-10.3% in offices and 12.7-17% for retail. A 10.5% energy reduction qualifies buildings for a LEED EA credit, and a 14% reduction is good for two points.
The study attributed the energy performance advantage of suspended ceilings to the use of a return air plenum with low static pressures and fan horsepower vs. ducted air returns with higher static pressures and fan horsepower in open-plenum systems. In addition, return air plenums more efficiently remove heat from lighting systems and reduce the AC load. Suspended ceilings also offer about 20% higher light reflectance, thereby reducing lighting costs.
For more information, see: http://www.cisca.org/files/public/LCS_brochure_rev_9-08_lo-res.pdf.
Related Stories
| Apr 13, 2011
Office interaction was the critical element to Boston buildout
Margulies Perruzzi Architects, Boston, designed the new 11,460-sf offices for consultant Interaction Associates and its nonprofit sister organization, The Interaction Institute for Social Change, inside an old warehouse near Boston’s Seaport Center.
| Apr 13, 2011
Expanded Museum of the Moving Image provides a treat for the eyes
The expansion and renovation of the Museum of the Moving Image in the Astoria section of Queens, N.Y., involved a complete redesign of its first floor and the construction of a three-story 47,000-sf addition.
| Apr 13, 2011
Duke University parking garage driven to LEED certification
People parking their cars inside the new Research Drive garage at Duke University are making history—they’re utilizing the country’s first freestanding LEED-certified parking structure.
| Apr 12, 2011
Rutgers students offered choice of food and dining facilities
The Livingston Dining Commons at Rutgers University’s Livingston Campus in New Brunswick, N.J., was designed by Biber Partnership, Summit, N.J., to offer three different dining rooms that connect to a central servery.
| Apr 12, 2011
Long-awaited San Francisco center is music to jazz organization’s ears
After 28 years, SFJAZZ is getting its first permanent home. The San Francisco-based nonprofit, which is dedicated to advancing the art of jazz through concerts and educational programs, contracted local design firm Mark Cavagnero Associates and general contractor Hathaway Dinwiddie to create a modern performance center in the city’s Hayes Valley neighborhood
| Apr 12, 2011
Spray Foam Applications on the Rise
New uses for spray polyurethane foam enable Building Teams to achieve greater longevity and sustainability in their projects.
| Mar 30, 2011
New testing device may help to seal the deal for building owners
A building is only as secure against the environment as its most degraded joint sealants, about 50% of which fail in less than 10 years after installation. Moisture damage due to failed sealants is responsible for much of the $65 billion to $80 billion spent on annual repairs. However, researchers at the National Institute of Standards and Technology are assembling a toolkit of measurement devices and scientific data that will help manufacturers of sealants systematically improve the protective performance of their products.
| Mar 11, 2011
Renovation energizes retirement community in Massachusetts
The 12-year-old Edgewood Retirement Community in Andover, Mass., underwent a major 40,000-sf expansion and renovation that added 60 patient care beds in the long-term care unit, a new 17,000-sf, 40-bed cognitive impairment unit, and an 80-seat informal dining bistro.
| Mar 11, 2011
Research facility added to Texas Medical Center
Situated on the Texas Medical Center’s North Campus in Houston, the new Methodist Hospital Research Institute is a 12-story, 440,000-sf facility dedicated to translational research. Designed by New York City-based Kohn Pedersen Fox, with healthcare, science, and technology firm WHR Architects, Houston, the building has open, flexible labs, offices, and amenities for use by 90 principal investigators and 800 post-doc trainees and staff.
| Mar 11, 2011
Blockbuster remodel transforms Omaha video store into a bank
A former Hollywood Video store in Omaha, Neb., was renovated and repurposed as the SAC Federal Credit Union, Ames Branch. Architects at Leo A Daly transformed the outdated 5,000-sf retail space into a modern facility by wrapping the exterior in poplar siding and adding a new glass storefront that floods the interior with natural light.
